我国不同规模生猪生产环境效率比较研究——基于非期望产出Super-SBM模型的分析

Comparative Research on the Environment Efficiency of Hog Production on Different Scales in China——Based on the Undesirable Output Super-SBM Model Analysis

稳定生猪生产和保障猪肉供应,事关"三农"发展、群众生活和经济社会发展大局。为探究发展生猪产业既有效保障城乡居民对猪肉的消费需求,又不会对农村环境造成污染问题,本文采用Super-SBM模型和非期望产出Super-SBM模型,分别对我国不同规模生猪生产技术效率和环境效率进行测算和对比分析。研究结果发现:无论是否考虑污染物排放量这一非期望产出,我国生猪生产的技术效率和环境效率水平均较高,且存在显著的规模效应。尤其在考虑非期望产出后,我国生猪生产的技术效率水平进一步提高。

Stabilizing hog production and guaranteeing pork supply are related to the development of "agriculture, rural areas and farmers", people’s lives, and the overall situation of economic and social development. In order to explore the hog industry development could not only effectively protect China’s urban and rural residents on the consumption of pork demand, but also will not cause pollution to the rural environment, the Super-SBM Model and the Undesired Output Super-SBM Model were used to measure and compare the technical efficiency and environmental efficiency of different scales pig production in China. Results indicated that the technical efficiency and the environmental efficiency of hog production were high, and there was significant scale benefit, regardless of whether the undesirable output of pollutant emission was considered or not. After considering the undesired output, the technical efficiency level of hog production has been improved.